LC-42SA1E (serv.man2). Adjustment Procedure - Sharp TV Service Manual (repair manual). Page 14

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LC-42SA1E/RU
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[7] Video signal adjustment procedure
* The adjustment process mode menu is listed in Section 5.
1. Signal check
1. Signal generator level adjustment check (Adjustment to the specified level)
2. Entering the adjustment process mode 
1. Enter the adjustment process mode according to Section 3.
3. RF AGC adjustment
4. PAL signal & tuner adjustment
•Composite signal PAL
: 0.7Vp-p  
±0.02Vp-p (Pedestal to white level)
•15K component signal
: Y level               0.7Vp-p 
±0.02Vp-p (Pedestal to white level)
  (50 Hz)
  PB, PR level      0.7Vp-p 
±0.02Vp-p
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
PAL
Sprit Field Colour Bar
RF signal UV
[Terminal]
TUNER
•Feed the PAL Sprit Field colour bar signal  to TUNER.
  Signal level: 52 dB 
µV   +0dB ,  -1dB (75Ω  LOAD)
2
Auto adjustment
performance
Adjustment process
Page3
Bring the cursor on [
RF AGC ADJ] and press [OK]
[
RF AGC ADJ  OK] appears when finished.
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
PAL
Full Field Color Bar
Composite or RF signal
[Terminal]
EXT3 VIDEO IN
TUNER
•Feed the PAL full field colour bar signal (75% colour saturation) to    
  EXT3 VIDEO IN.
•Feed the RF signal (PAL colour bar) to TUNER.
•Make sure the PAL colour bar pattern  has the sync level of 7:3 with 
  the picture level.
2
Auto adjustment
performance
Adjustment process
Page3
Bring the cursor on [
PAL + TUNER ADJ] and press [OK]
[
PAL + TUNER ADJ  OK] appears when finished.
[RF Signal]
100% white
100% white
VIDEO IN SIGNAL]
100% white
[RF Signal]
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